Continuous Wave Photonic Crystal Laser in Ultraviolet Range

TL;DR

This paper explores the use of photonic band-gap structures to develop continuous wave ultraviolet lasers with higher power and efficiency by suppressing spontaneous emission through embedding active media in photonic crystals.

Contribution

It proposes new schemes of 2D and 3D photonic crystal lasers for the ultraviolet range, aiming to reduce laser threshold and enhance output power.

Findings

Photonic band-gap structures can suppress spontaneous emission.

Proposed schemes enable potential development of UV continuous wave lasers.

The approach could lead to higher power UV laser sources.

Abstract

Great potential of photonic band-gap (PBG) structures for the development of continuous wave ultraviolet all-solid-state laser, including UV femtosecond pulse source, as well as for increase of output laser power at short-wave optical range is shown. The basic idea is a decrease of the laser threshold via suppression of the spontaneous emission in the active medium by means of embedding it into 2D or 3D PBG structure having the midgap frequency close to the frequency of the laser transition. Different schemes of 2D and 3D photonic crystal laser for ultraviolet range are proposed.